21165750

素因数分解:

$2^1\times 3^2\times 5^3\times {\mathrm{23}}^1\times {\mathrm{409}}^1$

素因数の和:455

約数の個数: 96

約数和(自身を含む): 59866560

約数和(自身を除く): 38700810

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 23, 25, 30, 45, 46, 50, 69, 75, 90, 115, 125, 138, 150, 207, 225, 230, 250, 345, 375, 409, 414, 450, 575, 690, 750, 818, 1035, 1125, 1150, 1227, 1725, 2045, 2070, 2250, 2454, 2875, 3450, 3681, 4090, 5175, 5750, 6135, 7362, 8625, 9407, 10225, 10350, 12270, 17250, 18405, 18814, 20450, 25875, 28221, 30675, 36810, 47035, 51125, 51750, 56442, 61350, 84663, 92025, 94070, 102250, 141105, 153375, 169326, 184050, 235175, 282210, 306750, 423315, 460125, 470350, 705525, 846630, 920250, 1175875, 1411050, 2116575, 2351750, 3527625, 4233150, 7055250, 10582875, 21165750]

約数ペア:

[(1, 21165750), (2, 10582875), (3, 7055250), (5, 4233150), (6, 3527625), (9, 2351750), (10, 2116575), (15, 1411050), (18, 1175875), (23, 920250), (25, 846630), (30, 705525), (45, 470350), (46, 460125), (50, 423315), (69, 306750), (75, 282210), (90, 235175), (115, 184050), (125, 169326), (138, 153375), (150, 141105), (207, 102250), (225, 94070), (230, 92025), (250, 84663), (345, 61350), (375, 56442), (409, 51750), (414, 51125), (450, 47035), (575, 36810), (690, 30675), (750, 28221), (818, 25875), (1035, 20450), (1125, 18814), (1150, 18405), (1227, 17250), (1725, 12270), (2045, 10350), (2070, 10225), (2250, 9407), (2454, 8625), (2875, 7362), (3450, 6135), (3681, 5750), (4090, 5175)]